Finding the Fourth Proportional to 65,246.96, 90,081.24 and 58,520.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,246.96 : 90,081.24 = 58,520.72 : x
2. Step 2: Convert to fraction form
   65,246.96/90,081.24 = 58,520.72/x
3. Step 3: Cross multiply
   65,246.96x = 90,081.24 × 58,520.72
4. Step 4: Simplify right side
   65,246.96x = 5,271,619,023.29
5. Step 5: Solve for x
   x = 5,271,619,023.29/65,246.96
6. Step 6: Final answer
   x = 80,794.86